Use this to debug a ropsten TXN

debugRopsten.js

// Try this first: http://s3.amazonaws.com/deco.network/debug/index.html




// first, paste in this

let txHash = '0x985ab562c4d6ea058f93f5118e4dc80110bbef534ce278a911e249a93aa18327'

var script = document.createElement('script');
script.type = 'text/javascript';
script.src = 'https://cdn.jsdelivr.net/gh/ethereum/web3.js@1.0.0-beta.37/dist/web3.min.js';
document.head.appendChild(script);


// wait for script to append and load, then paste in below for either geth or parity

// FOR GETH
const web3WithDebug = new Web3('http://ropsten.eth.deco.network:8545')

web3WithDebug.currentProvider.send({
  jsonrpc: "2.0",
  method: "debug_traceTransaction",
  id: new Date().getTime(),
  "params":[txHash]
  }, function (err, resp) {
    if (err) {
      console.error(err);
      return
    }
    const { result } = resp
    console.log('result: ',result)
    const { returnValue } = result
    console.log('return value: '+returnValue)
    const message = Web3.utils.hexToUtf8('0x' + returnValue.substr(136))
    console.log('Message: '+message)
  }
)

// FOR PARITY
let web3WithDebug = new Web3('http://34.73.70.51:8545')

web3WithDebug.currentProvider.send({
  jsonrpc: "2.0",
  method: "trace_replayTransaction",
  id: new Date().getTime(),
  "params":[txHash, ["trace"]]
  }, function (err, resp) {
    if (resp.error) {
      console.error(resp.error);
      return
    }
    const { result } = resp
    console.log('result: ',result)
    const { output } = result
    console.log('output: ',output)
    const message = Web3.utils.hexToUtf8('0x' + output.substr(138))
    console.log('Message: '+message)
  }
)